During the show, his first London appearance since playing the now-defunct Docklands Arena 2001, included a surprise appearance by Dr. Dre, who collaborated with Em on such hits as "Still D.R.E.", "Nuthin' But a 'G' Thang", "Forgot About Dre", and "The Next Episode.”

Watch Dr. Dre walk on stage at the 1:57 mark in the video below, following Eminem’s performance of "Dead Wrong," a 1999 collaboration with Notorious B.I.G.

During the show, Em also performed songs from his catalog, including "My Name Is," "The Real Slim Shady," "Not Afraid,” "Without Me" and "Lose Yourself."

Eminem will play a second concert at Wembley Stadium tonight, with openers Odd Future and Danny Brown.